Can someone explain the game to me in great detail

Basically I started the game and I genuinely have no idea what I’m doing:

-Affinity is limiting -I’m assuming this is a game that requires to stick to some girls and drop some

I’ll do a run sticking to one side probably to unlock as much content as possible so it doesn’t bother me that everything is not complete.

But where to from there? Should another run be strictly on the opposite affinity or what?

Also, are there any decent walkthroughs, because honestly the original’s 140 page document is insane and the ones online are just bad.

EDIT: Thank you for the replies! I think I’ll drop the walkthroughs and make choices I’m comfortable with.